A sample which is having 1.547-g of blue copper (II) sulfate penta hydrate, CuSO4 * 5 H2O is heated carefully to drive off the water. The white crystals of CuSO4 that are left behind have a mass of 0.989 g. Determine the numbers of moles of H2O were in the original sample? Demonstrate that the relative molar amounts of H2O and CuSO4 agree with the formula of the hydrate.